Roller for a grass ski



FIG. 1 is a left side/top/front perspective view of a roller for a grass ski showing my new design;

FIG. 2 is a top view thereof, the bottom view being a mirror image and, therefore, not shown;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a front view thereof, the rear view being a mirror image and, therefore, not shown. 

The ornamental design for roller for a grass ski, as shown and described. 